Seiko Cal. 5644 - 548

The Seiko 5644-548 represents an important milestone in Seiko's 1979 lineup. It features a Navy dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-6a9062f30a4b]

Also known as: Turtle, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1979

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